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Development potato herbicide on trial

Bayer’s new herbicide for use in potatoes is said to have impressed in trials giving good control of a broad range of weeds.


Marianne   Curtis

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Marianne   Curtis
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The herbicide, which Bayer is hoping to introduce for the start of the 2019 season, approval permitting, currently carries the development code SP01664 and is in demonstration trials around the country.

 

Containing the active substance aclonifen, it is applied at the pre-emergence stage and is said to offer good crop safety with no variety or soil restrictions.

 

Bayer campaign manager for roots Edward Hagues says growers, who are facing fewer weed control options since the withdrawal of linuron, will welcome aclonifen.

 

“It is a diphenyl ether, a bleaching compound, that is taken up by the hypocotyl, cotyledons and coleoptile and then translocated to the meristems causing bleaching and chlorosis of young shoot tissue as it develops.


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Broad spectrum

“It has a broad spectrum of activity with good control of small nettle, brassica weeds, chenopodium weeds such as fat-hen and orache and a range of polygonum species with a useful contribution to the control of mayweed and grass weeds (from seed).”

 

According to Scottish Agronomy’s Eric Anderson who had trials at Fife, SP01664 performed admirably and served to extend the extend the spectrum of Artist (flufenacet + metribuzin).

 

“When applied in a mix with Artist it gave good control of annual meadow grass, small nettle, oilseed rape, fat-hen and black-bindweed.”

 

In the east, SP01644 was managed in trial by John Keer of Richard Austin Agriculture who applied it to a crop of Melody at a light land site in north Lincolnshire. “What impressed me most was its crop safety on what was a light soil. There was no evidence of damage to the growing crop and no negative effects on crop vigour or development.”

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